主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
汽车实用技术

汽车实用技术 ›› 2025, Vol. 50 ›› Issue (9): 7-10.DOI: 10.16638/j.cnki.1671-7988.2025.009.002

• 新能源汽车 • 上一篇    

多电池包串联对单包充电的热失控风险研究

王印 1，刘瑶泽 1，黄卫峰 2*，赵子芳 2   

  1. 1.郑州日产汽车有限公司 技术中心； 2.河南科技学院 化学化工学院
  • 发布日期:2025-05-13
  • 通讯作者: 王印
  • 作者简介:王印（1989－），男，工程师，研究方向为动力电池开发 通信作者：黄卫峰（1991－），男，硕士，工程师，研究方向为电池材料及安全性能
  • 基金资助:
    河南省高等学校重点科研项目（24B150011）；国家自然科学基金青年科学基金项目（22309044）

Research on the Thermal Runaway Risk of Single Pack Charging with Multiple Battery Packs Connected in Series

WANG Yin1 , LIU Yaoze1 , HUANG Weifeng2*, ZHAO Zifang2   

  1. 1.Technical Center, Zhengzhou Nissan Automobile Company Limited; 2.School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology
  • Published:2025-05-13
  • Contact: WANG Yin

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摘要： 新能源商用车采用多个电池包串联后再并联的动力电池系统在发生绝缘失效故障、高 压线束连接错误等故障时，会造成多个电池包串联后对单个电池包充电引发动力电池热失控 的风险。文章以 8 个标准电池包通过 4 串联 2 并联组成的动力电池系统为例，展开多电池包 串联对单电池包充电故障及热失控原因分析。建议选用高能量型电芯并采用电池包串联或将 电池包内配置智能熔断器的方案规避此类风险。经分析电池包串联可规避多包对单包充电的 风险，智能熔断器在 0.5 s 内可断开故障电流，可有效避免此类热失控发生。

关键词: 商用车；动力电池；电池包；热失控

Abstract: The use of multiple battery packs in series and parallel in the power battery system of new energy commercial vehicles can cause the risk of thermal runaway in a single battery pack due to insulation failure, incorrect high-voltage cable connection, etc. This paper takes 8 standard battery packs connected in 4 series and 2 parallel configurations to form a power battery system as an example to study the failure and thermal runaway reasons of charging a single battery pack by multiple battery packs in series. It is suggested to use high-energy type cells and to connect battery packs in series or to configure intelligent fuses in the battery packs to avoid such risks. Analysis shows that battery pack series connection can avoid the risk of charging a single battery pack by multiple battery packs in series, and intelligent fuses can cut off fault current within 0.5 seconds, effectively preventing thermal runaway.

Key words: commercial vehicles; power batteries; battery pack; thermal runaway